18731979

素因数分解:

$3^4\times 7^1\times {\mathrm{33037}}^1$

素因数の和:33056

約数の個数: 20

約数和(自身を含む): 31980784

約数和(自身を除く): 13248805

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 33037, 99111, 231259, 297333, 693777, 891999, 2081331, 2675997, 6243993, 18731979]

約数ペア:

[(1, 18731979), (3, 6243993), (7, 2675997), (9, 2081331), (21, 891999), (27, 693777), (63, 297333), (81, 231259), (189, 99111), (567, 33037)]